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Finding the Fourth Proportional to 57,013.96, 78,680.90 and 31,862.92

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Solution

The fourth proportional to 57,013.96, 78,680.90 and 31,862.92 is: 43,971.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,013.96 : 78,680.90 = 31,862.92 : x
  2. Step 2: Convert to fraction form
    57,013.96/78,680.90 = 31,862.92/x
  3. Step 3: Cross multiply
    57,013.96x = 78,680.90 × 31,862.92
  4. Step 4: Simplify right side
    57,013.96x = 2,507,003,222.23
  5. Step 5: Solve for x
    x = 2,507,003,222.23/57,013.96
  6. Step 6: Final answer
    x = 43,971.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.